2 years ago

According to the diagram shown on the right, how does energy flow in an ecosystem?

Physics

2 answers:

Arte-miy333 [17]2 years ago

8 0

Answer:

the right answer is D Energy flows from the Sun through producers to consumers

Explanation:

i took the quiz

liubo4ka [24]2 years ago

6 0

The correct answer would be D

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100 J OF HEAT IS PRODUCED EACH SECOND IN A 4 COULUMB RESISTER. THE POTENTIAL DIFFERANCE ACROSS THE RESISTER WILL BE

igomit [66]

Answer:

The correct answer is "20 Volts".

Explanation:

Given:

Heat,

H = 100 J

Resistance,

R = 4 Ω

As we know,

⇒ $P=\frac{v^2}{R}$

By putting the values, we get

⇒ $100=\frac{v^2}{4}$

⇒ $v^2=100\times 4$

⇒ $=400$

⇒ $v=\sqrt{400}$

⇒ $=20 \ volts$

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2 years ago

Sally accelerates a 250 kg cart at 3 m/s/s. What must be

Arisa [49]

Net force = mass x acceleration = 250 x 3 = 750 N

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2 years ago

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Nitrogen, oxygen, and argon

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2 years ago

Potential energy results from the ______or position of an object.

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Answer:

Mass

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2 years ago

Determine the maximum shearing stress in a solid shaft of 1.5-in. diameter as it transmits 75 hp at a speed of 1800 rpm. (Round

erma4kov [3.2K]

Answer:

$\tau=3.96\ ksi$

Explanation:

Given that

d= 1.5 in ( 1 in = 0.0254 m)

d= 0.0381 m

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P= 55927.5 W

N= 1800 rpm

We know that power P is given as

$P=\dfrac{2\pi N\ T}{60}$

T=Torque

N=Speed

$55927.5=\dfrac{2\times \pi \times 1800\ T}{60}$

T=296.85 N.m

The maximum shear stress is given as

$\tau=\dfrac{16 T}{\pi d^3}$

$\tau=\dfrac{16\times 296.85}{\pi \times 0.0381^3}$

$\tau=27.35\ MPa$

We know that 1 MPa =0.145 ksi

$\tau=3.96\ ksi$

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3 years ago